<template>
    <div class="shopcar-container">
        <!-- 商品列表项区域 -->
        <div class="goods-list">
            <div class="mui-card" v-for="(item, index) in goodslist" :key="index">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
                        <mt-switch v-model="$store.getters.getGoodsSelected[item.id]" @change="selectedChanged(item.id, $store.getters.getGoodsSelected[item.id])"></mt-switch>
                        <img :src="item.thumb_path" >
                        <div class="info">
                            <h1> {{item.title}} </h1>
                            <p>
                                <span class="price">￥{{item.sell_price}} </span>
                                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                                <!-- 问题：如何从购物车中获取商品的数量 -->
                                <!-- 1.可以先建立一个 空对象,然后循环购物车中所有商品的数据,把 当前循环这条商品的 Id 作为 对象 的属性名,count值作为对象的 属性值, -->
                                <a href="#" @click.prevent="remove(item.id,index)">删除</a>
                            </p>
                        </div>
					</div>
				</div>
			</div>
        </div>
        <!-- 结算区域 -->
        <div class="mui-card">
            <div class="mui-card-content">
                <div class="mui-card-content-inner jiesuan">
                    <div class="left">
                        <p>总计(不含运费)</p>
                        <p>已勾选商品 <span class="red">{{$store.getters.getGoodsCountAndmount.count}}</span> 件, 总价 <span class="red" >￥{{$store.getters.getGoodsCountAndmount.amount}}</span> </p>
                    </div>
                    <mt-button type="danger">去结算</mt-button>
                </div>
            </div>
        </div>
    </div>
</template>
    
<script>
import numbox from '../subcompontents/shopcar_numbox.vue'
export default {
    components: {
        numbox
    },
    data() {
        return {
            goodslist: [] // 购物车中所有商品的数据
        }
    },
    created () {
        this.getGoodsList();
    },
    methods: {
        getGoodsList() {
            // 1.获取到 store 中所有的商品的id，然后拼接出一个 用逗号分隔的 字符串
            // 获取购物车商品列表
            var idArr = [];
            this.$store.state.car.forEach(item => idArr.push(item.id));
            // 如果购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
            if(idArr.length<=0) {
                return;
            }
            this.$axios.get('/api/goods/getshopcarlist/' + idArr.join(',')).then(result => {
                if(result.data.status === 0) {
                    this.goodslist = result.data.message;
                }
            })
        },
        remove(id,index) {
            // 点击删除,把商品从 store 中根据 传递的 id 删除, 同时, 把当前组件中的goodslist 中,对应的商品,使用index删除
            this.goodslist.splice(index,1);
            this.$store.commit('removeFormCar', id);
        },
        selectedChanged(id,val) {
            // 每当点击开关，把最新的 开关状态， 同步到 store 中
            this.$store.commit('updateGoodsSelected',{id, selected: val});
        }
    }
}
</script>

<style lang="scss" scoped>
.shopcar-container {
    background-color: #eee;
    overflow: hidden;
    .goods-list {
        img {
            width: 60px;
            height: 60px;
        }
        h1 {
            font-size: 13px;
        }
        .info {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            .price{color: red; font-weight: bold;}
        }
        .mui-card-content-inner {
            display: flex;
            align-items: center;
        }
    }
    .jiesuan {
        display: flex;
        justify-content: space-between;
        align-items: center;
        .red {
            color: red;
            font-weight: bold;
            font-size: 16px;
        }
    }
}
</style>